body {
    display: flex;
    flex-direction: column;
}

header {
    flex: 0 0 44px;
}

header h1 {
    line-height: 44px;
    text-align: center;
    font-size: 20px;
    font-weight: normal;
}

main {
    flex: 1;
    position: relative;
    background: url(../imgs/advertisement-bg.jpg) no-repeat center top;
    background-size: cover;

}

.btn-box {
    display: flex;
    justify-content: center;
    position: absolute;
    top: 28px;
    right: 14px;
    background-color: #F8F8F8;
    height: 40px;
    border-radius: 20px;
    text-align: center;
    padding: 10px;
}

.btn-box .sec {
    padding: 0 10px;
    border-right: 1px solid #333;

}

.btn-box .skip {
    padding: 0 10px;
}

.slogan {
    position: absolute;
    bottom: 100px;
    width: 100%;
    text-align: center;
    color: #fff;
    font-size: 46px;
    font-weight: bold;
}
